Hydrogen Separation Characteristics of SiC Nanoporous Membrane at High Temperature

2007 ◽  
Vol 26-28 ◽  
pp. 271-274 ◽  
Author(s):  
Y. Kim ◽  
Eun Bi Kim ◽  
Soo Ryong Kim ◽  
Moo Hyun Suh ◽  
Doo Jin Choi ◽  
...  
Keyword(s):  
High Temperature ◽  
Pore Size ◽  
Coal Gasification ◽  
Hydrogen Permeability ◽  
Hydrothermal Condition ◽  
Ceramic Membranes ◽  
Combined Cycle ◽  
Hydrogen Separation ◽  
Alumina Support ◽  
Good Thermal Stability

Ceramic membranes having less than 1nm size pores have great potential for gas separation at high temperature due to their good thermal stability. Moreover, nanoporous silicon carbide membrane has potential application under hydrothermal condition at high temperature since it is highly stable at high temperature. In this research, nanoporous SiC membrane has been developed on porous alumina support using preceramic polymer. Pore size of the SiC membrane was controlled using polystylene(PS) as the pore forming agent. The SiC membrane having controlled pore size was characterized with SEM, EDS, FT-IR, XRD and pore size measurement. The hydrogen permeability and selectivity toward nitrogen gas of the developed membrane were 0.3 x 10-6 mole/m2.s.pa and 4.1, respectively. The nanoporous hydrogen selective SiC membrane shows promising application in membrane reactor for steam reforming reacti on of natural gas, water gas shift reactions and hydrogen separation from coal gasification such as Integrated Gasification Combined Cycle (IGCC).

Nanoporous SiC Membrane Derived from Preceramic Polymer

2007 ◽  
Vol 124-126 ◽  
pp. 1733-1736 ◽  
Author(s):  
Y. Kim ◽  
Soo Ryong Kim ◽  
B.G. Song ◽  
Vikram V. Dabhade ◽  
B.K. Sea ◽  
...  
Keyword(s):  
High Temperature ◽  
Porous Alumina ◽  
Hydrogen Permeability ◽  
Hydrothermal Condition ◽  
Ceramic Membranes ◽  
Preceramic Polymer ◽  
Nitrogen Gas ◽  
Good Thermal Stability ◽  
Preceramic Polymers ◽  
Ft Ir

Ceramic membranes having nano sized pores have great potential for gas separation at high temperature due to their good thermal stability. Moreover, nanoporous silicon carbide membrane has potential application under hydrothermal condition at high temperature. In this research, nanoporous SiC membrane has been developed on the porous alumina plate using preceramic polymers as CVD precursor at 850oC. The preceramic polymer was characterized with Si29 NMR, FT-IR, GC and TGA. The prepared SiC membrane was characterized with SEM and EDS. The hydrogen permeability and selectivity toward nitrogen gas were measured using a GC.

H2/CO2 Gas Separation Characteristic of Zeolite Membrane at High Temperature

2007 ◽  
Vol 26-28 ◽  
pp. 267-270
Author(s):  
Woo Teck Kwon ◽  
Soo Ryong Kim ◽  
Eun Bi Kim ◽  
Seong Youl Bae ◽  
Y. Kim
Keyword(s):  
Gas Separation ◽  
Coal Gasification ◽  
Hydrothermal Reaction ◽  
Low Cost ◽  
Porous Alumina ◽  
Hydrogen Permeability ◽  
Combined Cycle ◽  
Zeolite Membrane ◽  
Alumina Support ◽  
Zeolite Membranes

Due to the need for CO2 sequestration associated with H2 production from fossil fuels, zeolite membrane are very promising due to their low cost, high stability and high permeance. Recently, the faujasite(FAU), the silica/aluminophophate(SAPO-4) framework family of zeolite have been studied for CO2 gas separation. In our study, ZSM-5 membrane was prepared on the porous alumina support using a hydrothermal technique. The thickness of zeolite membrane was controlled by the hydrothermal reaction time and temperature. The prepared zeolite membranes were characterized with SEM and thin film XRD. The hydrogen permeability and selectivity toward carbon dioxide gas were 0.6x 10-6 mole/m2.s.pa and 3.16, respectively. The hydrogen selective zeolite membranes show promising application in hydrogen separation from coal gasification such as Integrated Gasification Combined Cycle (IGCC).

scholarly journals Thermodynamic analysis of high temperature nuclear reactor coupled with advanced gas turbine combined cycle

2019 ◽  
Vol 23 (Suppl. 4) ◽  
pp. 1187-1197 ◽  
Author(s):  
Marek Jaszczur ◽  
Michal Dudek ◽  
Zygmunt Kolenda
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Gas Turbine ◽  
Thermodynamic Analysis ◽  
Thermal Efficiency ◽  
Nuclear Power ◽  
Coal Gasification ◽  
Nuclear Reactor ◽  
Combined Cycle ◽  
Oil Processing

One of the most advanced and most effective technology for electricity generation nowadays based on a gas turbine combined cycle. This technology uses natural gas, synthesis gas from the coal gasification or crude oil processing products as the energy carriers but at the same time, gas turbine combined cycle emits SO2, NOx, and CO2 to the environment. In this paper, a thermodynamic analysis of environmentally friendly, high temperature gas nuclear reactor system coupled with gas turbine combined cycle technology has been investigated. The analysed system is one of the most advanced concepts and allows us to produce electricity with the higher thermal efficiency than could be offered by any currently existing nuclear power plant technology. The results show that it is possible to achieve thermal efficiency higher than 50% what is not only more than could be produced by any modern nuclear plant but it is also more than could be offered by traditional (coal or lignite) power plant.

scholarly journals Numerical investigation of advanced gas turbine combined cycle coupled with high-temperature nuclear reactor and cogeneration unit

2019 ◽  
Vol 128 ◽  
pp. 03005 ◽  
Author(s):  
Marek Jaszczur ◽  
Michal Dudek ◽  
Zygmunt Kolenda
Keyword(s):  
High Temperature ◽  
Power Plant ◽  
Power Systems ◽  
Gas Turbine ◽  
Nuclear Power ◽  
Coal Gasification ◽  
Nuclear Reactor ◽  
Combined Cycle ◽  
The European Union ◽  
Intergovernmental Panel

In the European Union by 2050, more than 80% of electricity should be generated using nongreenhousegases energy technology. Nuclear power systems share at present about 15% of the power market and thistechnology can be the backbone of a carbon-free European power system. Energy market transitions are similar to global pathways were analysed in the Intergovernmental Panel on Climate Change report. From a practical point of view currently, the most advanced and most effective technology for electricity generation is based on a gas turbine combined cycle. This technology in a normal way uses natural gas, synthesis gas from the coal gasification or crude oil processing products as the energy carriers but at the same time, such system emits sulphur oxides, nitrogen oxides, and CO2 to the environment. In thepresent paper, a thermodynamic analysis of environmentally friendly power plant with a high–temperature gas nuclear reactor and advanced configuration of gas turbine combined cycle technology is investigated. The presented analysis shows that it is possible to obtain for proposed thermalcycles an efficiency higher than 50% which is not only more than could be offered by traditional coal power plant but much more than can be proposed by any other nuclear technology.

scholarly journals Thermodynamic Analysis of Advanced Gas Turbine Combined Cycle Integration with a High-Temperature Nuclear Reactor and Cogeneration Unit

Energies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 400 ◽  
Author(s):  
Marek Jaszczur ◽  
Michał Dudek ◽  
Zygmunt Kolenda
Keyword(s):  
High Temperature ◽  
Energy Conversion ◽  
Gas Turbine ◽  
Coal Gasification ◽  
Nuclear Reactor ◽  
Electrical Energy ◽  
Combined Cycle ◽  
Point Of View ◽  
Hard Coal ◽  
The Eu

The EU has implemented targets to achieve a 20% share of energy from renewable sources by 2020, and 32% by 2030. Additionally, in the EU countries by 2050, more than 80% of electrical energy should be generated using non-greenhouse gases emission technology. At the same time, energy cost remains a crucial economic issue. From a practical point of view, the most effective technology for energy conversion is based on a gas turbine combined cycle. This technology uses natural gas, crude oil or coal gasification product but in any case, generates a significant amount of toxic gases to the atmosphere. In this study, the environmentally friendly power generation system composed of a high-temperature nuclear reactor HTR integrated with gas turbine combined cycle technology and cogeneration unit is thermodynamically analysed. The proposed solution is one of the most efficient ways for energy conversion, and what is also important it can be easily integrated with HTR. The results of analysis show that it is possible to obtain for analysed cycles thermal efficiency higher than 50% which is not only much more than could be proposed by typical lignite or hard coal power plant but is also more than can be offered by nuclear technology.

scholarly journals Development of a High Temperature Turbine for Operation on Coal-Derived Fuel

1980 ◽  
Author(s):  
J. C. Wolf ◽  
S. Moskowitz ◽  
G. B. Manning
Keyword(s):  
High Temperature ◽  
Fly Ash ◽  
Particle Deposition ◽  
Coal Gasification ◽  
Pressure Ratio ◽  
Jet Fuel ◽  
Combined Cycle ◽  
Turbine Cascade ◽  
Turbine Component ◽  
Temperature And Pressure

The efficiency of an integrated coal gasification-combined cycle powerplant can be improved above that of conventional coal-fired steam powerplants by increasing the gas turbine component firing temperature and pressure ratio while limiting component cooling requirements. A stage of the development of a transpiration-air-cooled turbine for operation at 2600 F (1427 C) and above in a combusted coal-derived fuel environment is presented. Results are presented from 300 hr of turbine cascade and 400 hr of rig-engine tests conducted at up to 3000 F (1649 C) using a jet fuel “doped” with aluminum oxide or fly ash to simulate the potentially erosive and corrosive nature of coal derived fuels. The metallographic examinations and flow permeability discussed in terms of the effects from particle deposition.

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